Pressure reducing valves (PRVs) are a vital component of managing water pressure in a building, but they need to be maintained and replaced when necessary. PRVs should be inspected annually and replaced when they show signs of failure, such as fluctuating pressure, loud noises, or visible corrosion. Some professionals recommend replacement every 3–5 years depending on usage, while others suggest replacement every 10–15 years for high-quality valves.

Overview
A pressure reducing valve is a vital component in any plumbing system. It is designed to regulate water pressure throughout the entire facility, making sure it remains at a safe and consistent level. Without a properly functioning PRV, too much pressure can damage your pipes, or you may experience low water flow.

The PRV regulates the incoming water pressure from the supply line to an appropriate level for use within your building. By automatically adjusting the amount of water flowing through your pipes, it prevents the flow from becoming too great and causing damage. It also makes sure that all fixtures throughout your facility are receiving adequate water pressure so they work correctly.

It is important to remember that installing and maintaining a PRV should not be taken lightly as there are safety risks involved if not done correctly.

Regular maintenance of your pressure reducing valve is as important as installation, as this will help extend its life span and keep it running efficiently. This includes checking for any leaks or blockages caused by dirt buildup, replacing parts when necessary, changing out gaskets periodically, and testing the valve regularly with a calibrated test gauge.

Suppose your PRV does need replacing due to age or damage. In that case, you should always call a qualified plumber who will have access to approved valves that meet safety standards for both residential and commercial applications.

How to inspect your PRV

• Check pressure:
  Use a pressure gauge on an outdoor spigot to check for high pressure (over 80 psi).
• Test functionality:
  Attach the gauge, note the pressure reading, mark the PRV’s adjustment bolt setting, and then turn the bolt to temporarily change the pressure. Read the pressure again and then return the bolt to its original setting. If the pressure doesn’t return to the original reading, the PRV is likely faulty.
• Look for physical signs:
  Check for rust, corrosion, or leaks around the valve itself.

Signs your PRV needs replacement

• High or fluctuating water pressure:
  This is a primary indicator that the valve is not working correctly and can damage pipes, fixtures, and appliances.
• Water hammer:
  Loud banging noises in your pipes when water is turned off.
• Leaking fixtures or pipes:
  Water leaks are a common consequence of high pressure.
• Running toilets: High pressure can cause toilets to run intermittently.
• Visible corrosion:
  Rust or other corrosion on the valve itself indicates wear and tear.

Other considerations

• Professional replacement:
  While some tasks can be done by a homeowner, it is often best to have a professional plumber replace the valve to ensure it is installed correctly.
• Lifespan:
  PRVs can last between 8 to 15 years, but this can be shortened by water quality and constant pressure fluctuations.
• Maintenance:
  Annual inspection and maintenance, such as cleaning out sediment, can help extend the life of your PRV.